2010/5/6 Matt Keating <keatster@xxxxxxxxx>:
> Thanks for all the updates. Will look into iozone and the advice given
> about the rest.
Either I'm doing/reading something wrong or a 1TB SATA 7200 RPM drive
is faster than 4x300GB SCSI 10K RPM drives in raid 10.
Both of the results below were from iozone, running the following command:
$ iozone -R -l 5 -u 5 -r 4k -s 100m -F /tmp/F1 /tmp/F2 /tmp/F3 /tmp/F4 /tmp/F5
SATA:
"Throughput report Y-axis is type of test X-axis is number of processes"
"Record size = 4 Kbytes "
"Output is in Kbytes/sec"
" Initial write " 564135.95
" Rewrite " 2021499.52
" Read " 5937227.44
" Re-read " 5898310.02
" Reverse Read " 5652286.96
" Stride read " 5556376.58
" Random read " 5505582.00
" Mixed workload " 3570796.92
" Random write " 1913500.58
" Pwrite " 580229.98
" Pread " 5310776.62
RAID:
"Throughput report Y-axis is type of test X-axis is number of processes"
"Record size = 4 Kbytes "
"Output is in Kbytes/sec"
" Initial write " 253099.59
" Rewrite " 915449.39
" Read " 1911688.05
" Re-read " 1906603.72
" Reverse Read " 1847584.97
" Stride read " 1772254.31
" Random read " 1550438.36
" Mixed workload " 1276847.84
" Random write " 930307.99
" Pwrite " 206193.02
" Pread " 2631370.07
Am I doing something wrong? Please advise.
Thanks,
Matt
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